TS 970 Transfer Switch
PM163 REV 0 20/02/05 38 Thomson Power Systems
Engine start contact is wired incorrectly
from ATS to engine control panel
Verify engine start contact is wired correctly from ATS
to engine control panel
Incorrect TSC 900 Engine start contact is
used
For single engine applications, use Engine Start
Signal #2 contact on TSC 900 lower terminal block
(J10b)
TSC 900 Engine start contact terminal
block (j10b) is unplugged
Verify 2 position TSC 900 terminal block j10b is fully
inserted into controller and it is connected to correct
position (i.e. lower TB)
Defective TSC 900 SCU Engine Start
relay/contact
• Verify Engine start signal LED diagnostic light is
illuminated on SCU when engine is signaled to
start. If LED is on, verify contacts are closing.
If defective Return TSC 900 SCU to Thomson Power
Systems using RMA process
Engine Start and/or Cooldown timers may
be duplicated in both ATS control and
Engine control Panel
Disable timers in either ATS or Engine control panel.
No time delay when there should
be
Incorrect TSC 900 time delay setting
Verify TSC 900 timer setting
GHC Display is not showing any
system information
GHC screen may be in a “sleep” mode.
Touch screen to re-activate LCD display
GHC USB cable is unplugged at the GHC
end or the SCU end
Verify USB cable is fully inserted into the GHC and
SCU devices
• Temporarily unplug GHC USB cable for 5
seconds then re-inset to reboot GHC comptroller.
Wait 30 seconds to determine if GHC reboots to
normal operation.
• Verify TSC 900 GHC has SD Memory Card fully
inserted into socket.
If defective Return to Thomson Power Systems using
RMA process
TSC 900 SCU Control board is not
powered from 120VAC Utility supply,
120VAC Generator supply, or 24Vdc aux
supply (if fitted)
The GHC needs maintained 5Vdc power from the TSC
900 SCU Control board at all times. Verify SCU is
powered from either 120VAC Utility supply, 120VAC
Generator supply, or 24Vdc aux supply (if fitted).
SCU USB Jumper (J24 on SCU PCB) is in
the incorrect position
Verify SCU USB Jumper (J24 on SCU PCB) is in the
“GHC” position.